In this, when the pits are opened following a caution, the lead lap cars can pit first. If a car a lap or more down chooses not to pit, this car would restart in front of the leader's car, but still be a lap down. Under the wave around rule, cars at least one lap down that do not pit under the caution will be waved around the pace car on the final lap before the green flag is waved. This allows these cars to make up a lap by driving around the track and falling into position at the tail end of the field. Drivers will forfeit their wave around if they enter the pit for fuel or tires and will restart in the order they exit the pit. Therefore, on the restart, the order will be the lead lap cars, lapped cars, the "lucky dog" (recipient of the beneficiary rule), and then the wave around cars. If the drivers is required to serve a penalty, the wave around will not be allowed. If a restart takes place, and a caution occurs after the leader, but not the entire field, had taken the green flag, a new caution period applies, and a new beneficiary is named. The wave-around cars from the previous caution may then take fuel and tires.